Preparation of p-p heterojunction and its photocatalytic performance by 3D NiS supported by 2D lamellar CuMn-LDO

2021 ◽  
Author(s):  
Ye Liu ◽  
Jing Xu ◽  
Zhenlu Liu ◽  
Xinyu Liu ◽  
Shengming Xu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
High Photocatalytic Activity

Ni-based nanomaterials have attracted extensive concern as photocatalysts thanks to their high photocatalytic activity and non-toxicity. In this study, a novel visible light induced photocatalyst CuMn-LDO/NiS (CMS) was successfully synthesized...

Heterostructured g-C3N4/Ag–TiO2 composites with efficient photocatalytic performance under visible-light irradiation

RSC Advances ◽  
2015 ◽  
Vol 5 (69) ◽  
pp. 56136-56144 ◽  
Author(s):  
Mengqiao Zang ◽  
Lei Shi ◽  
Lin Liang ◽  
Defeng Li ◽  
Jianmin Sun
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Synergistic Effects ◽  
High Photocatalytic Activity ◽  
Light Irradiation ◽  
Enhanced Absorption ◽  
Efficient Separation ◽  
Photogenerated Electrons

The heterostructured g-C3N4/Ag–TiO2 composites exhibited high photocatalytic activity, which was attributed to the synergistic effects of the enhanced absorption of visible light and the efficient separation rates for photogenerated electrons-holes.

Tuning of the photocatalytic performance of g-C3N4 by polyoxometalates under visible light

2017 ◽  
Vol 46 (46) ◽  
pp. 16019-16024 ◽  
Author(s):  
Gang Yan ◽  
Xiaojia Feng ◽  
Liguang Xiao ◽  
Wenguang Xi ◽  
Huaqiao Tan ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
Spatial Separation ◽  
High Photocatalytic Activity ◽  
Electron Traps ◽  
Photogenerated Electrons

Polyoxometalate/g-C3N4 composites were prepared with Keggin POMs and g-C3N4. POMs used as electron traps can efficiently promote the spatial separation of photogenerated electrons and holes of C3N4, which resulted in a high photocatalytic activity towards MO degradation.

scholarly journals In situ fabrication of a direct Z-scheme photocatalyst by immobilizing CdS quantum dots in the channels of graphene-hybridized and supported mesoporous titanium nanocrystals for high photocatalytic performance under visible light

RSC Advances ◽  
2018 ◽  
Vol 8 (73) ◽  
pp. 42233-42245 ◽  
Author(s):  
Ningmei Tang ◽  
Youji Li ◽  
Feitai Chen ◽  
Zhenying Han
Keyword(s):  
Quantum Dots ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Performance ◽  
High Photocatalytic Activity ◽  
Cds Quantum Dots ◽  
In Situ Fabrication

CdS@GMT/GR exhibits high photocatalytic activity due to its direct Z-scheme structure obtained by immobilizing CdS quantum dots in the channels of GMT nanocrystals.

Constructing metal-free polyimide/g-C3N4 with high photocatalytic activity under visible light irradiation

RSC Advances ◽  
2015 ◽  
Vol 5 (101) ◽  
pp. 83225-83231 ◽  
Author(s):  
Yan Gong ◽  
Hongtao Yu ◽  
Shuo Chen ◽  
Xie Quan
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
High Photocatalytic Activity ◽  
Light Irradiation ◽  
Metal Free

A novel metal-free polyimide (PI)/g-C3N4 heterojunction has been prepared, characterized and their photocatalytic performance was compared with g-C3N4.

Photocatalytic Behaviors Observed in Microstructured PbS under Visible Light

2016 ◽  
Vol 697 ◽  
pp. 745-748
Author(s):  
Li Na Qiao ◽  
Huan Chun Wang ◽  
Yang Shen ◽  
Yuan Hua Lin ◽  
Ce Wen Nan
Keyword(s):  
Photocatalytic Activity ◽  
Charge Carrier ◽  
Visible Light ◽  
Congo Red ◽  
Lead Acetate ◽  
Photocatalytic Performance ◽  
Raw Materials ◽  
High Photocatalytic Activity ◽  
Dendrite Structure ◽  
Structure Lead

Micro-dendrite structure lead sulfide was synthesized by a simple hydrothermal method at 180°C using lead acetate and thiourea as raw materials. The obtained powder sample was characterized by XRD, TEM and ED. Photocatalytic performance of the sample was investigated by the degradation of Congo red under visible light. The sample shows high photocatalytic activity and the charge-carrier of the hole plays an important role in the photodegradation process.

Preparation of Z-scheme AgI/Bi5O7I plate with high visible light photocatalytic performance by phase transition and morphological transformation of BiOI microspheres at room temperature

2018 ◽  
Vol 47 (33) ◽  
pp. 11420-11428 ◽  
Author(s):  
Nan Yang ◽  
Xiang Lv ◽  
Suting Zhong ◽  
Danlin Qian ◽  
Sujuan Han ◽  
...  
Keyword(s):  
Phase Transition ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Room Temperature ◽  
Photocatalytic Performance ◽  
Transformation Process ◽  
High Photocatalytic Activity ◽  
Morphological Transformation ◽  
Visible Light Photocatalytic

Z-scheme AgI/Bi5O7I plate composite fabricated at room temperature through phase transition and morphological transformation process with high photocatalytic activity.

Tuning the Photocatalytic Performance of Plasmonic Nanocomposites (ZnO/Aux) Driven in Visible Light

2019 ◽  
Vol 8 (1) ◽  
pp. 56-61
Author(s):  
Aneeya K. Samantara ◽  
Debasrita Dash ◽  
Dipti L. Bhuyan ◽  
Namita Dalai ◽  
Bijayalaxmi Jena
Keyword(s):  
Electron Transfer ◽  
Photocatalytic Activity ◽  
Visible Light ◽  
Transfer Rate ◽  
Photocatalytic Performance ◽  
Light Exposure ◽  
Au Nanoparticle ◽  
Electron Transfer Rate ◽  
Au Nps ◽  
Zno Nanostructure

: In this article, we explored the possibility of controlling the reactivity of ZnO nanostructures by modifying its surface with gold nanoparticles (Au NPs). By varying the concentration of Au with different wt% (x = 0.01, 0.05, 0.08, 1 and 2), we have synthesized a series of (ZnO/Aux) nanocomposites (NCs). A thorough investigation of the photocatalytic performance of different wt% of Au NPs on ZnO nanosurface has been carried out. It was observed that ZnO/Au0.08 nanocomposite showed the highest photocatalytic activity among all concentrations of Au on the ZnO surface, which degrades the dye concentration within 2 minutes of visible light exposure. It was further revealed that with an increase in the size of plasmonic nanoparticles beyond 0.08%, the accessible surface area of the Au nanoparticle decreases. The photon absorption capacity of Au nanoparticle decreases beyond 0.08% resulting in a decrease in electron transfer rate from Au to ZnO and a decrease of photocatalytic activity. Background: Due to the industrialization process, most of the toxic materials go into the water bodies, affecting the water and our ecological system. The conventional techniques to remove dyes are expensive and inefficient. Recently, heterogeneous semiconductor materials like TiO2 and ZnO have been regarded as potential candidates for the removal of dye from the water system. Objective: To investigate the photocatalytic performance of different wt% of Au NPs on ZnO nanosurface and the effect of the size of Au NPs for photocatalytic performance in the degradation process. Methods: A facile microwave method has been adopted for the synthesis of ZnO nanostructure followed by a reduction of gold salt in the presence of ZnO nanostructure to form the composite. Results: ZnO/Au0.08 nanocomposite showed the highest photocatalytic activity which degrades the dye concentration within 2 minutes of visible light exposure. The schematic mechanism of electron transfer rate was discussed. Conclusion: Raspberry shaped ZnO nanoparticles modified with different percentages of Au NPs showed good photocatalytic behavior in the degradation of dye molecules. The synergetic effect of unique morphology of ZnO and well anchored Au nanostructures plays a crucial role.

scholarly journals Enhanced Visible-Light Photocatalytic Performance of SAPO-5-Based g-C3N4 Composite for Rhodamine B (RhB) Degradation

Materials ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 3948
Author(s):  
Lingfang Qiu ◽  
Zhiwei Zhou ◽  
Mengfan Ma ◽  
Ping Li ◽  
Jinyong Lu ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Redox Reactions ◽  
Photocatalytic Performance ◽  
Dye Degradation ◽  
Thermal Polymerization ◽  
Light Illumination ◽  
Electron Hole ◽  
Visible Light Illumination ◽  
Visible Light Photocatalytic

Novel visible-light responded aluminosilicophosphate-5 (SAPO-5)/g-C3N4 composite has been easily constructed by thermal polymerization for the mixture of SAPO-5, NH4Cl, and dicyandiamide. The photocatalytic activity of SAPO-5/g-C3N4 is evaluated by degrading RhB (30 mg/L) under visible light illumination (λ > 420 nm). The effects of SAPO-5 incorporation proportion and initial RhB concentration on the photocatalytic performance have been discussed in detail. The optimized SAPO-5/g-C3N4 composite shows promising degradation efficiency which is 40.6% higher than that of pure g-C3N4. The degradation rate improves from 0.007 min−1 to 0.022 min−1, which is a comparable photocatalytic performance compared with other g-C3N4-based heterojunctions for dye degradation. The migration of photo-induced electrons from g-C3N4 to the Al site of SAPO-5 should promote the photo-induced electron-hole pairs separation rate of g-C3N4 efficiently. Furthermore, the redox reactions for RhB degradation occur on the photo-induced holes in the g-C3N4 and Al sites in SAPO-5, respectively. This achievement not only improves the photocatalytic activity of g-C3N4 efficiently, but also broadens the application of SAPOs in the photocatalytic field.

CdS/Ag2S/g-C3N4 ternary composites with superior photocatalytic performance for hydrogen evolution under visible light irradiation

2021 ◽  
Vol 50 (9) ◽  
pp. 3253-3260 ◽  
Author(s):  
Shan Zhao ◽  
Junbiao Wu ◽  
Yan Xu ◽  
Xia Zhang ◽  
Yide Han ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Hydrogen Evolution ◽  
Visible Light Irradiation ◽  
Photocatalytic Performance ◽  
Light Irradiation ◽  
Synergic Effect

CdS/Ag2S/g-C3N4 ternary composites showed excellent photocatalytic performance toward H2 evolution. Their improved photocatalytic activity could be attributed not only to the synergic effect, but also to the introduction of Ag2S.

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